CVE-2023-31313

Privileged code execution via malformed SMU messages

Published Feb 12, 2026 · Updated Feb 12, 2026

Code execution in AMD Instinct MI210 and MI250 before ROCm 6.4 allows local privileged users to run code through malformed SMU messages. PMFW acts as an unintended intermediary, forwarding attacker-controlled malformed messages to the system management unit without adequately constraining the request. Exploitation requires high local privileges and high complexity; successful abuse compromises confidentiality and integrity without a reported availability impact.

CVSS severity7.0
High
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code execution in AMD Instinct MI210 and MI250 before ROCm 6.4 allows local privileged users to run code through malformed SMU messages. PMFW acts as an unintended intermediary, forwarding attacker-controlled malformed messages to the system management unit without adequately constraining the request. Exploitation requires high local privileges and high complexity; successful abuse compromises confidentiality and integrity without a reported availability impact.

The record

CVE
CVE-2023-31313
Published
Feb 12, 2026
Updated
Feb 12, 2026
Vendor
Advanced Micro Devices, Inc.
Product
AMD Instinct™ MI250
Classifications
CWE-441
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Advanced Micro Devices, Inc. · AMD Instinct™ MI250Affected versions are unavailable in this record.
Advanced Micro Devices, Inc. · AMD Instinct MI210Affected versions are unavailable in this record.

Published CVSS scores

7.0AMDCVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
7.2AMDCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-441Unintended Proxy or Intermediary ('Confused Deputy')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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